Paul Guenther was likely running around the Raiders facility slapping butts Monday evening. The defensive coordinator was obviously thrilled to finally get a player for his unit after the Raiders had traded for Antonio Brown late Saturday and agreed to terms with offensive tackle Trent Brown Monday morning.

The Raiders agreed to a four-year free-agent contract with former Rams safety Lamarcus Joyner. ESPN reported the value of the contract to be close to $42 million.

The 5-foot-8, 191-pound Joyner will replace Marcus Gilchrist as the free safety and also will likely be used as a slot cornerback. That’s where Joyner played his first three years with the Rams before moving to free safety and playing the deep middle when Wade Phillips took over as defensive coordinator.

Joyner, 28, had 78 tackles, an interception and a pass breakup last season, when he played under an $11 million franchise tag. The year before, he had 10 combined interceptions and pass...